Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

Abstract

An object of the present disclosure is to provide an electrophotographic photosensitive member with suppressed positive ghosts, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. The present disclosure provides an electrophotographic photosensitive member having a support and a photosensitive layer on the support; the photosensitive layer comprises (α) a compound represented by the formula (1), and (β) at least one selected from the group consisting of a compound represented by the formula (2) and a compound represented by the formula (3), wherein a content of the (β) with respect to a content of the (α) is 50 to 850 mass ppm in the photosensitive layer.

What is claimed is: 
     
         1 . An electrophotographic photosensitive member having a support and a photosensitive layer on the support;
 the photosensitive layer comprises
 (α) a compound represented by a following formula (1), and 
 (β) at least one selected from the group consisting of a compound represented by a following formula (2) and a compound represented by a following formula (3), wherein a content of the (β) with respect to a content of the (α) is 50 to 850 mass ppm in the photo sensitive layer. 
   
       
         
           
           
               
               
           
         
       
     
     
         2 . The electrophotographic photosensitive member according to  claim 1 ,
 wherein the photo sensitive layer comprises the compound represented by the formula (2), and   wherein a content of the compound represented by the formula (2) with respect to a content of the compound represented by the formula (1) is 350 mass ppm or less in the photo sensitive layer.   
     
     
         3 . The electrophotographic photosensitive member according to  claim 1 ,
 wherein the photo sensitive layer comprises the compound represented by the formula (3), and   wherein a content of the compound represented by the formula (3) with respect to a content of the compound represented by the formula (1) is 480 mass ppm or less in the photo sensitive layer.   
     
     
         4 . The electrophotographic photosensitive member according to  claim 1 ,
 wherein the content of the (β) in the photosensitive layer with respect a total mass of the photo sensitive layer is 3 to 30 mass ppm.   
     
     
         5 . The electrophotographic photosensitive member according to  claim 1 ,
 wherein the content of the (α) in the photo sensitive layer with respect to a total mass of the photo sensitive layer is 9 to 50 mass %.   
     
     
         6 . A process cartridge for electrophotography comprising:
 an electrophotographic photosensitive member;   and at least one unit selected from the group consisting of a charging unit, a developing unit, and a cleaning unit,   the process cartridge for electrophotography integrally supporting the electrophotographic photosensitive member and the at least one unit, and being detachably attachable to a main body of an electrophotographic apparatus,   wherein the electrophotographic photosensitive member having a support and a photosensitive layer on the support;   the photosensitive layer comprises   (α) a compound represented by a following formula (1), and   (β) at least one selected from the group consisting of a compound represented by a following formula (2) and a compound represented by a following formula (3), wherein a content of the (β) with respect to a content of the (α) is 50 to 850 mass ppm in the photo sensitive layer.   
       
         
           
           
               
               
           
         
       
     
     
         7 . An electrophotographic apparatus comprising:
 an electrophotographic photosensitive member,   an exposing unit,   a charging unit,   a developing unit, and   a transfer unit,   wherein the electrophotographic photosensitive member having a support and a photosensitive layer on the support;   the photosensitive layer comprises   (α) a compound represented by a following formula (1), and   (β) at least one selected from the group consisting of a compound represented by a following formula (2) and a compound represented by a following formula (3), wherein a content of the (β) with respect to a content of the (α) is 50 to 850 mass ppm in the photosensitive layer.